Stamping sheet metal is an efficient form of manufacturing, capable of cranking hundreds or thousands of items an hour. The annoying thing is that making new stamping dies is a long, costly process. This is bad enough when it comes to retooling a factory, but creating prototypes for new products can leave designers waiting weeks. The Ford Research and Innovation Center in Dearborn, Michigan has taken a page from the 3D printing handbook and is developing a new way of forming sheet metal that allows designers to create prototypes in hours instead of weeks.